从工程生物材料中控制释放微生物
Manivannan Sivaperuman Kalairaj1, Iris George2, Sasha M George3
1Department of Biomedical Engineering, Texas A&M University, College Station, Texas 77843, United States.
ACS applied materials & interfaces
|July 8, 2025
概括
工程生物材料通过一种新的水凝骨折机制释放益生菌. 这种方法可确保持续提供100天以上的治疗相关剂量,克服了先前对益生菌持久性的限制.
科学领域:
- 生物材料科学 生物材料科学
- 微生物学 微生物学
- 合成生物学 合成生物学
背景情况:
- 益生菌调节微生物组和免疫反应,以获得治疗效益.
- 有效的益生菌治疗需要在目标部位持续持续存在.
- 现有的方法缺乏生物材料来持续,临床相关的益生菌释放.
研究的目的:
- 开发一种用于持续释放代谢活性益生菌的新生物材料.
- 建立一种使用工程生物材料控制微生物输送的通用机制.
- 为了证明益生菌输送的零顺序释放动力学.
主要方法:
- 在不那么硬的水凝中封装硬的益生菌微生物.
- 利用微生物增殖诱导水凝骨折和随后的释放.
- 通过变化的初始细胞负载和矩阵特性来表征释放动力学和剂量反应.
- 测试多种微生物类型的受控释放 (格拉姆阴性,格拉姆阳性,真菌).
主要成果:
- 工程生物材料 (ELM) 在2小时内释放超过10^8个埃舍里奇亚大肠杆菌的殖民地形成单位 (CFU).
- 持续的益生菌释放被观察到至少100天.
- 释放动力学跟随零顺序释放,表明递送的速度是恒定的.
- 微生物释放可以通过调整负载和矩阵力学来控制三次数.
- 从多个水凝矩阵中证明了各种益生菌类型的受控释放.
结论:
- 一种新的水凝骨折机制使益生菌的持续和受控释放成为可能.
- 这种工程生物材料方法克服了治疗应用中实现益生菌持久性的局限性.
- 机械释放机制提供了一个多功能平台,用于输送各种治疗微生物.
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